How To Patch A Large Hole In A Concrete Wall

It is not a good idea for a large patch since it can lead to cracking of the other material.

How to patch a large hole in a concrete wall.

Knock away the cracked and crumbling concrete around the hole. The speed of set is to prevent it from washing away before it can set it can even make a set under water. If the wall is not holding anything i would fill it in with some bricks then use mortar to finish. Don t skimp on cost.

Remove loose material from the hole in the wall by probing it with the tip of a. Hydraulic cement expands slightly as it sets. When a posted a little while ago about sealing and patching holes in my garage i conveniently left one small thing out of the narrative. Here it is with brad for scale.

Also try to flatten out the bottom of the hole to create a stable level surface for the new patching material. If you have a wet dry vacuum this is a great place to use it. Or rather one very large thing. Clean out as much debris as possible and use a shop vacuum to suck out the remaining smaller particles.

Wet down the holes with water for best patch adhesion. It is kind of a not very good thing. Use a hammer and chisel to remove loose concrete from the hole. An ideal patch to use for both purposes is hydraulic cement which expands to fill cracks and holes as it dries.

It provides much better adhesion and curing of the patch.